CN102692454A - Wedge-shaped longitudinal section welding line ultrasonic flaw detection method - Google Patents
Wedge-shaped longitudinal section welding line ultrasonic flaw detection method Download PDFInfo
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- CN102692454A CN102692454A CN2012101961581A CN201210196158A CN102692454A CN 102692454 A CN102692454 A CN 102692454A CN 2012101961581 A CN2012101961581 A CN 2012101961581A CN 201210196158 A CN201210196158 A CN 201210196158A CN 102692454 A CN102692454 A CN 102692454A
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- longitudinal section
- flaw detection
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- welding line
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Abstract
The invention relates to the technical field of a welding line flaw detection method, and in particular relates to a wedge-shaped longitudinal section welding line ultrasonic flaw detection method. The method comprises the following steps: firstly, according to the inclined angle theta of a vertical post surface, correcting an angle Eta inclining sideways of an organic glass wedge block probe and the contact surface of a workpiece; secondly, manufacturing a deformed RB-2 sample block, wherein the inclined angle of the upper surface of the deformed RB-2 sample block is consistent with the inclined angle theta of the vertical post surface; thirdly, testing and manufacturing a refraction angle, the leading edge length, the scanning proportion and a DAC (distance-amplitude correction) curve of the organic glass wedge block probe; and fourthly, detecting flaws of an object by utilizing the organic glass wedge block probe. The wedge-shaped longitudinal section welding line ultrasonic flaw detection method is simple and reasonable, and achieves the aims of accurate positioning and length measurement of defects, the functions of performance test, scanning proportion adjustment and flexibility adjustment according to the stipulation of the relevant welding line flaw detection standard are realized, the reliability of welding line flaw detection is improved greatly, and the wedge-shaped longitudinal section welding line ultrasonic flaw detection method is easy to use and popularize.
Description
Technical field
The present invention relates to a kind of technical field of seam inspection method, especially a kind of wedge shape longitudinal section weld seam supersonic detection method.
Background technology
The butt-weld of forging hook tail frame column is because of design demand, and structure is middle high, the low asymmetric wedge shape in both sides on the weld seam longitudinal section.UT (Ultrasonic Testing) to this weld seam; When probe is surveyed on the wedge shape inclined-plane,, stitch with the normal weld butt plates welding and different to be because sound wave gets into behind the wedge shape joint cover along rectilinear propagation; The defective of finding will influence the defect location judgement and be difficult to survey long not in the dead ahead of probe.
Summary of the invention
In order to overcome the deficiency that existing wedge shape longitudinal section weld seam supersonic detection method defect location judges that precision difference and defect length are difficult to measure, the invention provides a kind of wedge shape longitudinal section weld seam supersonic detection method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of wedge shape longitudinal section weld seam supersonic detection method, and its method may further comprise the steps:
One. according to the angle θ of column face tilt, organic glass voussoir probe is gone out one to laterally inclined angle η with the correction of workpiece surface of contact;
Two. make distortion RB-2 test block, the inclination angle angle of distortion RB-2 test block upper surface is consistent with the angle θ of column face tilt;
Three. refraction angle, forward position length and the scanning ratio of test organic glass voussoir probe in distortion RB-2 test block, make the DAC curve;
Four. with organic glass voussoir probe material object is detected a flaw.
According to another embodiment of the invention, the centre position that further comprises distortion RB-2 test block horizontal through hole longitudinal section is consistent with the cross-drilled hole degree of depth in the test block of RB-2 routine apart from the vertical range of ramp center line.
The invention has the beneficial effects as follows; This wedge shape longitudinal section weld seam supersonic detection method is simple and reasonable; Reached long purpose has accurately been located and surveyed to defective; Realized meeting the function of performance test, scanning ratio adjusting and the sensitivity adjusting of non-destructive testing standard regulation, improved the reliability of seam inspection greatly, be easy to use and promote by relevant weldering.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the present invention's sonic propagation direction synoptic diagram of popping one's head in;
Fig. 3 is that the present invention is out of shape RB-2 test block structural representation;
Fig. 4 is an organic glass voussoir sonde configuration synoptic diagram of the present invention.
1. columns and framework butt-weld among the figure, 2. organic glass voussoir probe.
Embodiment
Like Fig. 1 is structural representation of the present invention, a kind of wedge shape longitudinal section weld seam supersonic detection method, and its method may further comprise the steps:
One. according to the angle θ of column face tilt, organic glass voussoir probe 2 is gone out one to laterally inclined angle η with the correction of workpiece surface of contact;
Two. make distortion RB-2 test block, the inclination angle angle of distortion RB-2 test block upper surface is consistent with the angle θ of column face tilt;
Three. refraction angle, forward position length and the scanning ratio of test organic glass voussoir probe 2 in distortion RB-2 test block, make the DAC curve;
Four. detect a flaw with 2 pairs of material objects of organic glass voussoir probe.
The centre position of distortion RB-2 test block horizontal through hole longitudinal section is consistent with the cross-drilled hole degree of depth in the test block of RB-2 routine apart from the vertical range of ramp center line.
During use, as shown in Figure 2, according to the angle θ of column face tilt, organic glass voussoir probe 2 is gone out one to laterally inclined angle η (as shown in Figure 4) with the correction of workpiece surface of contact, θ is a known angle, then the relation of η and θ is C
L1/ sin η=C
S2/ sin θ, wherein, C
L1Be longitudinal wave velocity in the organic glass, C
S2Be transverse wave velocity in the steel; Secondly, as shown in Figure 3, make distortion RB-2 test block, the inclination angle of test block upper surface is consistent with the column inclination angle, and guarantees that the centre position of horizontal through hole longitudinal section is consistent with conventional each the cross-drilled hole degree of depth of test block of RB-2 apart from the vertical range of ramp center line; At last, K value, forward position length, scanning ratio and the DAC curve of organic glass voussoir probe 2 all tested and made in distortion RB-2 test block, after finishing; Detect a flaw by column shown in Figure 1 and framework butt-weld 1; Simultaneously, note probe inclination angle and inclined-plane, column left and right sides corresponding relation, in the face of weld seam; Inclined-plane, left side flaw detection probe right bank, inclined-plane, right side flaw detection probe left bank.
This wedge shape longitudinal section weld seam supersonic detection method is simple and reasonable; Reached long purpose has accurately been located and surveyed to defective; Realized meeting the function of performance test, scanning ratio adjusting and the sensitivity adjusting of non-destructive testing standard regulation by relevant weldering; Improved the reliability of seam inspection greatly, be easy to use and promote.
Claims (2)
1. wedge shape longitudinal section weld seam supersonic detection method is characterized in that its method may further comprise the steps:
One. according to the angle θ of column face tilt, organic glass voussoir probe (2) and the correction of workpiece surface of contact are gone out one to laterally inclined angle η;
Two. make distortion RB-2 test block, the inclination angle angle of distortion RB-2 test block upper surface is consistent with the angle θ of column face tilt;
Three. refraction angle, forward position length and the scanning ratio of test organic glass voussoir probe (2) in distortion RB-2 test block, make the DAC curve;
Four. with organic glass voussoir probe (2) material object is detected a flaw.
2. wedge shape according to claim 1 longitudinal section weld seam supersonic detection method is characterized in that, the centre position of distortion RB-2 test block horizontal through hole longitudinal section is consistent with the cross-drilled hole degree of depth in the test block of RB-2 routine apart from the vertical range of ramp center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210196158.1A CN102692454B (en) | 2012-06-14 | 2012-06-14 | Wedge-shaped longitudinal section welding line ultrasonic flaw detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210196158.1A CN102692454B (en) | 2012-06-14 | 2012-06-14 | Wedge-shaped longitudinal section welding line ultrasonic flaw detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102692454A true CN102692454A (en) | 2012-09-26 |
| CN102692454B CN102692454B (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210196158.1A Active CN102692454B (en) | 2012-06-14 | 2012-06-14 | Wedge-shaped longitudinal section welding line ultrasonic flaw detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439408A (en) * | 2013-08-20 | 2013-12-11 | 北京巴布科克·威尔科克斯有限公司 | Ultrasonic detection method for weld joint of small-caliber pipe shelf angle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61148366A (en) * | 1984-12-21 | 1986-07-07 | Hitachi Ltd | Ultrasonic probe |
| JP2005249484A (en) * | 2004-03-02 | 2005-09-15 | Nissan Motor Co Ltd | Ultrasonic probe |
| CN1967207A (en) * | 2005-10-20 | 2007-05-23 | 通用电气公司 | Phased array ultrasonic methods and systems for generator rotor teeth inspection |
| CN202066838U (en) * | 2011-03-03 | 2011-12-07 | 中国石油天然气集团公司 | Ultrasonic dually-oblique probe for welding seam detection |
-
2012
- 2012-06-14 CN CN201210196158.1A patent/CN102692454B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61148366A (en) * | 1984-12-21 | 1986-07-07 | Hitachi Ltd | Ultrasonic probe |
| JP2005249484A (en) * | 2004-03-02 | 2005-09-15 | Nissan Motor Co Ltd | Ultrasonic probe |
| CN1967207A (en) * | 2005-10-20 | 2007-05-23 | 通用电气公司 | Phased array ultrasonic methods and systems for generator rotor teeth inspection |
| CN202066838U (en) * | 2011-03-03 | 2011-12-07 | 中国石油天然气集团公司 | Ultrasonic dually-oblique probe for welding seam detection |
Non-Patent Citations (1)
| Title |
|---|
| 陈丙森等: "《焊接手册 焊接结构 第3版》", 31 January 2008 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439408A (en) * | 2013-08-20 | 2013-12-11 | 北京巴布科克·威尔科克斯有限公司 | Ultrasonic detection method for weld joint of small-caliber pipe shelf angle |
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| CN102692454B (en) | 2014-12-31 |
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